test_param.c

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/**
 * @file test_param.c
 * Tests related to the parameter system.
 */

#include <px4_platform_common/defines.h>
#include <stdio.h>
#include "systemlib/err.h"
#include <parameters/param.h>
#include "tests_main.h"

#define PARAM_MAGIC1 12345678
#define PARAM_MAGIC2 0xa5a5a5a5

int
test_param(int argc, char *argv[])
{
    param_t     p;

    p = param_find("TEST_PARAMS");

    if (p == PARAM_INVALID) {
        warnx("test parameter not found");
        return 1;
    }

    if (param_reset(p) != OK) {
        warnx("failed param reset");
        return 1;
    }

    param_type_t t = param_type(p);

    if (t != PARAM_TYPE_INT32) {
        warnx("test parameter type mismatch (got %u)", (unsigned)t);
        return 1;
    }

    int32_t val = -1;

    if (param_get(p, &val) != OK) {
        warnx("failed to read test parameter");
        return 1;
    }

    if (val != PARAM_MAGIC1) {
        warnx("parameter value mismatch");
        return 1;
    }

    val = PARAM_MAGIC2;

    if (param_set(p, &val) != OK) {
        warnx("failed to write test parameter");
        return 1;
    }

    if (param_get(p, &val) != OK) {
        warnx("failed to re-read test parameter");
        return 1;
    }

    if ((uint32_t)val != PARAM_MAGIC2) {
        warnx("parameter value mismatch after write");
        return 1;
    }

    warnx("parameter test PASS");

    return 0;
}